Figure 1
From: Multi-observable Uncertainty Relations in Product Form of Variances
Uncertainty relations satisfied by observables σx, σy and σz with state ρ parameterized by Bloch vector 
: solid line for (Δσx)2 (Δσy)2 (Δσz)2, dot-dashed line for lower bound in (7), dashed line for the lower bound in (8), dotted line for lower bound in (9).
